Transmission impairment measuring instrument



FIG. 1 is a front view of an instrument of the present invention;

FIG. 2 is a front view of an instrument similar to the instrument shown in FIG. 1;

FIG. 3 is a top plan of the instruments shown in FIGS. 1 and 2;

FIG. 4 is a rear elevation of the instruments shown in FIGS. 1-3;

FIG. 5 is a left side elevation of the instruments shown in FIGS. 1-4;

FIG. 6 is a right side elevation of the instruments shown in FIGS. 1-5; and,

FIG. 7 is a bottom view of the instruments shown in FIGS. 1-6. 

The ornamental design for a transmission impairment measuring instrument, as shown and described. 